protected override void OnTargetChanged(FrameworkElement oldTarget, FrameworkElement newTarget)
{
base.OnTargetChanged(oldTarget, newTarget);
FrameworkElement resolvedControl;
if (String.IsNullOrEmpty(TargetName) && !IsTargetObjectSet)
{
if (!VisualStateUtilities.TryFindNearestStatefulControl(AttachedObject, out resolvedControl) && (null != resolvedControl))
{
throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture,
"Target {0} does not define any VisualStateGroups.",
new object[]
{
resolvedControl.Name
}));
}
}
else
{
resolvedControl = Target;
}
StateTarget = resolvedControl;
}
protected override void Invoke(object parameter)
{
if (null != StateTarget && Enum.IsDefined(typeof(ApplicationViewState), parameter))
{
string stateName;
var viewState = (ApplicationViewState)parameter;
switch (viewState)
{
case ApplicationViewState.FullScreenLandscape:
stateName = FullScreenLandscapeStateName;
break;
case ApplicationViewState.FullScreenPortrait:
stateName = FullScreenPortraitStateName;
break;
case ApplicationViewState.Filled:
stateName = FilledStateName;
break;
case ApplicationViewState.Snapped:
//if (Window.Current.Bounds.Left > 0)
// Debug.WriteLine("Right side");
//else
// Debug.WriteLine("Left side");
stateName = SnappedStateName;
break;
default:
stateName = string.Empty;
break;
}
if (string.IsNullOrEmpty(stateName))
{
stateName = viewState.ToString();
}
VisualStateUtilities.GoToState(StateTarget, stateName, UseTransitions);
}
}
